THE PROGRESS OF SCIENCE. 



375 



THE PROGEESS OF SCIENCE. 



CONVOCATION WEEK MEETINGS 

 OF SCIENTIFIC SOCIETIES. 

 There is an accounting of scientific 

 stock at the close of each year when 

 the national scientific societies hold 

 their annual meetings. There does not, 



tific work in 1850, 200 in 1860, 400 in 

 1870, 800 in 1880, 1,600 in 1890, 3,200 

 in 1900; and that we may expect to 

 find as many as 6,400 in 1910. Cer- 

 tainly the increase in endowments, in 

 opportunities and in men appears to 



Otto H. Tittmann, Siiperiutendent of the U. S. Coast and Geodetic Survey, Vice-president 



for Mathematics and Astronomy. 



however, exist either for this or any 

 other country a census of scientific 

 work and scientific men. As a rough 

 guess, it may be suggested that there 

 were perhaps 100 men in the United 

 States professionally engaged in scien- 



follow a geometrical rather than an 

 arithmetical progression. The Ameri- 

 can Association for the Advancement of 

 Science held its first meeting in 1848, 

 but the first meeting for which the 

 record of attendance has been pre- 



